Arista Networks on Wael Nasreddine

Arista - Add SSH key to a user

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Add SSH key to a user Link to heading

Problem Link to heading

I want to add an SSH key to my user

Solution Link to heading

Starting with a fresh shell logged in as admin.

Template Link to heading

localhost>enable
localhost#config
localhost(config)#username <user> sshkey <contents of the public key>
localhost(config)#write memory

Example Link to heading

localhost>enable
localhost#config
localhost(config)#username <user> sshkey ssh-rsa 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 Arista SSH Key
localhost(config)#write memory

Arista - Create a new user

Arista - Check Fan Speed

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Check Fan Speed Link to heading

Problem Link to heading

I want to check the current speed for the fans.

Solution Link to heading

You can check the fan speed by running the command show environment cooling

Example Link to heading

localhost>show environment cooling
System cooling status is: Ok
Ambient temperature: 14C
Fan speed override mode enabled at 30%
Airflow: front-to-back
Fan Status Configured Speed Actual Speed
---------------- --------------- ---------------- ----------------
1/1 Ok 30% 30%
2/1 Ok 30% 30%
3/1 Ok 30% 30%
4/1 Ok 30% 30%
PowerSupply1/1 Ok 30% 40%
PowerSupply2/1 Ok 30% 40%

Arista - Configure Terminal

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Configure Terminal Link to heading

Problem Link to heading

I need to configure an Arista device

Solution Link to heading

To configure an Arista, you must open a configure terminal which requires a user with privilege 15. Start the shell following the steps below:

enable to enable privileged escalation.
config to start the configuration terminal.

Arista - Custom Fan Speed Controller

Arista - Control Fan Speed

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Control Fan Speed Link to heading

Problem Link to heading

I want to set a custom fan speed for the fans.

Solution Link to heading

Ensure you are logged in as admin (or privileged user).

Change the fan speed can be done with the command environment fan-speed override xx where xx can be anywhere between 30 and 100. This command must be ran from within a configure block.

Arista - Create a new user

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Create a new user Link to heading

Problem Link to heading

I need to add a new user to Arista

Solution Link to heading

Starting with a fresh shell logged in as admin.

Template Link to heading

localhost>enable
localhost#config
localhost(config)#username <user> privilege <privilege> role <role> [nopassword | secret <password>]
localhost(config)#write memory

Examples Link to heading

Example with a password Link to heading

localhost>enable
localhost#config
localhost(config)#username <user> privilege 15 role network-admin secret <password>
localhost(config)#write memory

Example without a password Link to heading

localhost>enable
localhost#config
localhost(config)#username <user> privilege 15 role network-admin nopassword
localhost(config)#write memory

Arista - Add SSH key to a user

Arista - Custom Fan Speed Controller

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Custom Fan Speed Controller Link to heading

Problem Link to heading

The automatic fan speed controller is too conservative which leads to a lot of noise coming out of my switch. For instance, in an ambient temperature of 15℃ the fan is running at 60% which is absurd.

Solution Link to heading

The solution is to run a custom Python script that controls the speed of the fans based on the temperature of the system.

Arista - Download Firmware - DCS-7050T

Mon, 01 Jan 0001 00:00:00 +0000

Problem Link to heading

I want to download the latest firmware supported by my Arista DCS-7050T network switch that has reached End-of-life on August 9th, 2019. I can't seem to find the firmware

Solution Link to heading

List of EOS firmware I found on a random CDN.
I pulled the Firmware that came on my device and uploaded it to archive.org: eos-4.12.7.1
I also found and confirmed that latest supported version by my hardware and uploaded to archive.org: eos-4.18.11-m

Arista - Set the admin password

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Set the admin password Link to heading

Proble Link to heading

I want to configure a password for the admin user.

Solution Link to heading

Starting with a fresh shell logged in as admin.

localhost>enable
localhost#config
localhost(config)#username admin secret <password>
localhost(config)#write memory

Arista - Update The Firmware

Arista - Update The Firmware

Mon, 01 Jan 0001 00:00:00 +0000

Arista - Update The Firmware Link to heading

Problem Link to heading

Solution Link to heading

localhost>show version
Arista DCS-7050T-36-F
Hardware version: 04.02
Serial number: JPE14202311
System MAC address: 001c.7330.53b0

Software image version: 4.12.7.1
Architecture: i386
Internal build version: 4.12.7.1-1692483.EOS4127.1
Internal build ID: aae7a01c-f862-4897-aac7-5b9f890f5f1f

Uptime: 24 minutes
Total memory: 4017108 kB
Free memory: 152396 kB

Arista Networks on Wael Nasreddine

Arista - Add SSH key to a user

Arista - Add SSH key to a user Link to heading

Problem Link to heading

Solution Link to heading

Template Link to heading

Example Link to heading

Related Link to heading

Arista - Check Fan Speed

Arista - Check Fan Speed Link to heading

Problem Link to heading

Solution Link to heading

Example Link to heading

Related Link to heading

Arista - Configure Terminal

Arista - Configure Terminal Link to heading

Problem Link to heading

Solution Link to heading

Related Link to heading

Arista - Control Fan Speed

Arista - Control Fan Speed Link to heading

Problem Link to heading

Solution Link to heading

Arista - Create a new user

Arista - Create a new user Link to heading

Problem Link to heading

Solution Link to heading

Template Link to heading

Examples Link to heading

Example with a password Link to heading

Example without a password Link to heading

Related Link to heading

Arista - Custom Fan Speed Controller

Arista - Custom Fan Speed Controller Link to heading

Problem Link to heading

Solution Link to heading

Arista - Download Firmware - DCS-7050T

Problem Link to heading

Solution Link to heading

Related Link to heading

Arista - Set the admin password

Arista - Set the admin password Link to heading

Proble Link to heading

Solution Link to heading

Related Link to heading

Arista - Update The Firmware

Arista - Update The Firmware Link to heading

Problem Link to heading

Solution Link to heading

Related Link to heading